Figure 3-22.Combination wire rope and chain sling.ChainsChains are generally used in combination with oneof the other types of sling construction. See figure 3-22.A chain with a chain adjuster provides a simplifiedmethod of shifting the lifting point on a sling to matchthe components center of gravity under a variety ofhoisting configurations.LIFTING SLING MAINTENANCELoad-bearing cables, chains, straps, and otherstructural members of hoisting and restraining devicesare subject to wear and deterioration. It is necessary thatthese components be inspected and lubricatedperiodically to ensure safe and proper operation. Oninitial receipt of equipment or return of equipment fromdepot-level repair, the aircraft intermediatemaintenance department will perform a visualinspection of the hardware for missing or damagedcomponents. Upon completion of the inspection, theytag all equipment in accordance with the Inspection andProofload Testing of Lifting Slings and RestrainingDevices for Aircraft and Related Components manual,NAVAIR 17-1-114.Preinstallation InspectionPrior to each use, or once a month as in the case ofemergency handling slings, a complete visual inspectionof the wire rope, fabric or webbing, structural steel oraluminum, and chain slings must be performed.WARNINGSlings failing to pass the inspections, or slingssuspected of having been used duringhoisting operations beyond the ratedcapacity of the sling, will not be used underany circumstance. Unserviceable slings areforwarded to the applicable AircraftIntermediate Maintenance Department forfurther analysis and disposition.3-34